Lock.



A. A. PAGE.

LOCK.

APPLICATION FILED mm. 4. m4.

1 06,897. Patented Dec. 5, 1916.

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l.0CK..

APPLICATION FILED MAR. 4. I914.

1,206,897. Patented Dec. 5,1916.

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WITNESSES: -s INVENTOI? all-0d }6 By directly controlled by the knob shoe WITED STATES PATENT OFFICE.

ALBERT A. PAGE, OF EAST HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT 86 COMPANY,

OF NEW HAVEN, CONNECTICUT, A

CORPORATION' OF CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented Dec. 5, 1916.

Application filed March 4, 1914. Serial No. 822,423.

To all whom it may concern:

Be it known that I, ALBERT A. PAGE, a citizen of the United States, residing in the town of East Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear and exact description.

This invention relates to looks, and more particularly to that type of lock in which a latch bolt is adapted to be retracted from the outside of the door by a knob, and by suitable key mechanism, and from the inside of the door by a knob, there being suitable stop work or night latch mechanism associated with the outside knob, whereby it may be prevented from turning.

My improvements are herein shown and described as applied to a mortise lock, but it will be manifest from the following description that the invention is applicable to looks of other kinds.

The primary object of the invention is to provide improved means for controlling the operation of the stop work, or night latch mechanism, which is usually accessible at the face or front ofthe lock.

More particularly, it isaimed to provide improved means to prevent the throwing oif of the stop work, under ordinary circumstances, and permit it to be thrown off only when the inside knob is actuated in a particular manner. Furthermore, it is aimed to provide a lock wherein the stop work, or night latch mechanism, which cooperates in the usual way with the outside hub of the latch retracting mechanism is or yoke, which is adapted to be actuated by the hubs to retract the latch bolt. Again, it is proposed to provide a lock' in which controlling means for the stop work, or night latch mechanism, coiiperates directly with the walking beam connecting the night latch slides.

To these and other ends, the invention consists in the novel features and combinations of partsto be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is an elevation of a mortise lock embodying my improvements, with the cap plate removed, and the night latch mechanism in dogging position relative to the outside hub; Fig. 2 is a fragmentary view of Fig. 1, showing the latch bolt retracted by the cylinder lock mechanism; Fig. 3 is a fragmentary elevation of the lock, similar to Fig. 1, showing the latch retracting hub in position to release the night latch mechanism; Fig. 4 is a reverse view of the lower portion of the lock, with the parts in the position shown in Fig. 1; Fig. 5 is a similar view with the night latch mechanism in inoperative position; and Fig. 6 is a section on line 6 6 of Fig. 1.

Referring to the drawings, the lock case 10, of usual form, contains an ordinary latch bolt 11, projecting through the face plate 12, and adapted to be retracted by inside and outside hubs 13 and 14 respectively, operated by the customary knob spindle, not shown. The hubs 13, 14 retract the latch bolt by acting on the knob shoe or yoke 15, which may be of any preferred type. In the form shown, the yoke 15 is held in contact with the hubs by a spring 16, and at its upper rear extremity relative to the face of the lock it is provided with a shoulder 17 adapted to engage a cross-head 18 on the stem 19 of the latch bolt 11, whereby the bolt'may be retracted in the usual manner when either hub is turned. Associated with the outside hub 14 is suitable stop work, or night latch mechanism. which may be of ordinary type so far as its general features are concerned. In the form shown. the stop work includes a dogging slide 20, adapted to engage a notch 21 in the outside hub, and having a plunger head or button 22, working in an opening 23 in the face plate. The releasing member of the night latch mechanism comprises a releasing slide 24, having a plunger head or button 25, operating in an opening 26 in the face plate. The slides 20 and 24 are connected by a walking beam 27 pivoted in the case at28, and suitably connected at its respective ends with the night latch slides, as customary. All of the parts as so far described are of ordinary construction.

In accordance with my present invention, the night latch mechanism is controlled, as above intimated, by means of the knob shoe or yoke. In the form shown, the walking beam 27 is provided with a rearward projection 28" adapted to operate in a cutaway portion 29 of the knob yoke, as shown in Fig. 6. The projection 28 is provided with a pointed extremity 30, adapted to cooperate in a novel manner with an inclined Wall 31, constituting the rear wall of the, cutaway portion 29 of the yoke. 1

In the position shown in Figs. 1 and 4, the night latch mechanism, or stop work, dogs'the outside hub 14:, and prevents operation-of the outside knob. In thisv position of the parts, the extremity of projection 28 on the walking beam 27 BXtGHdSOVGI'thG I uncut portion 32 of the knob yoke, as best knob. "The insid'el ib has to be turned'to such an extent as to move the yoke backward out of the path of the projection 30 of the walking beam, as shown in "F ig. 3, before the night latch mechanism can hereleased by'operation of the releasing slide;

The night latchmechanism is released while the "latch retracting yoke is held by the inside knob in partly retracted position, after which when the knob is released the parts will assume the position shown in Fig. 6. When it is desired to dog the outside knob again, thismay be readilyeffected bymerely pushing inward the dogging slide in the usualmanne'r. I11 this operation, an inclined surface 30 on the walkingbeam bears against the in clined surface 31 of the yoke in such. a inanner that in forcing inward the dogging slide the yoke is likewise forced inward'to a very slight extent, which is, however, sufficient to release the walking beam and permit the return of the same to the position shown in Fig. 1. As theprojection 30 of the walking beam passes upward beyond the cotiperating'part of the yoke, the latter snaps back to its initial position in an obvious manner.

In the lock selected for illustration, the latch bolt maybe retracted from the outside of the door by a cylinder lock 33, having a bit 34, adapted to operate latch bolt retracting levers 35, 36. When the key mechanism is opera-ted by a suitable 'key, the lever 36 engages the cross-head 18 on the latch bolt, and retracts the latter without affectin-g' the knob yoke 15. Hence, the key jinechan'ism in the particular form shownhas no control over the locking and release of the night latch mechanism.

By my improvements, the night latch mechanism may be guarded, "by simple me'chanism, particularly well adapted to s mortise lock construction, against unaus thorized-release from dogging position, parclaims.

ticularly when it is attempted to throw off the dogging mechanism by an instrument inserted between the face plate and strike of the lock. v r

I have not attempted to illustrate or describe the various modifications of the construction which may be adopted within-the scope of the invention as defined in the What I claim is: V s .1. In a look, a latch bolt, a-retracting yoke therefor, inside .and' outside hubs to actuate said yoke, manually operable stop work to dog and release the outside hub, and stop work controlling meanscoeperate ing directly with saidyoke; substantially as described. i r

2. In a lock, a latch bolt, inside and outside retracting hubs therefor, manually operable stop work to dog and release the outside hub, and a retracting yoke for said latch bolt arranged for actuation by said hubs, and controllingthe operation'ofsaid stop work; substantially as described.

3. In a lock, a latch bolt, inside and outside retracting hubs therefor, stop work to dog and release the outside hub, including slides projecting through the face of the lock, anda retracting yoke for the latch bolt adapted for actuation by said hubs,'and

coeperating with said stop work to prevent the latter from being thrown off; substantially'as described.

l. In a look, a latch bolt, inside and out- 7 side retracting hubs therefor, stop work to Y dog and release the outside hub, including slides accessible atth'e face of the lock, and

a sliding retracting yoke for said bolt arranged for a-c'tuationby said hubs, and having a normal position in which it cooperates directly with said stop work to prevent areleasing movement thereof; substantially as described.

5. In a lock, a latch bolt, hubs to retract the same, manually operable stop work to dog one of said hubs, and a yoke adapted to coeperate with said 'hu'bs to retract the latch bolt and arranged to block a releasing movement of said stop work; substantially as described. 1 I

'6. "In a look, a latch bolt, hubs to retract the same, manually operable stop work to dog and release one of said hubs, including a dogging slide and a releasm'g slide, and

a yoke cooperating with said hubs to block a erable stop work to dog the outside hub, and

means separate from but actuated by said ins de 'hub to dog said stop work in its operative position; substantially as described.

lie

8. In a lock, a latch bolt, inside and outside manual retracting devices therefor, stop work mechanism to dog and release the outside retracting device, and including a dogging slide, a releasing slide, and a connecting member between said slides in combination with means engaging said connecting member to block said stop work against movement; substantially as described.

9. In a lock, a latch bolt, insideand outside retracting hubs therefor, stop work 'mechanism associated with the outside hub,

and including a dogging slide, a releasing slide, and a walking beam connecting said slides, in combination with means actuated from the inside of the room and cooperating directly with said walking beam to block said stop work against releasing movement; substantially as described.

10. In a look, a latch bolt, retracting mechanism therefor including a yoke, stop work mechanism for controlling said retracting mechanism, including dogging and releasing slides and a walking beam interconnectin said slides, and means of engagement between said stop work mechanism and said yoke, whereby the former is controlled by the latter; substantially as described.

11. In a lock, night latch mechanism including a walking beam, and means adapted to engage said walking beam to prevent movement of the night latch mechanism; substantially as described.

12. In a lock, a latch bolt, retracting mechanism therefor including a yoke, night latch mechanism cooperating with the retracting mechanism, and interengaging means on the yoke and night latch mechanism respectively for blocking the latter against movement; substantially as described.

13. In a lock, a latch bolt, retracting mechanism therefor, including a yoke, night latch mechanism associated with said retracting mechanism, and including dogging and releasing members respectively, and a walking beam connecting said members, said walking beam having means cooperating directly with said yoke to prevent movement of the night latch mechanism when the yoke is in one position, and permit movement of the night latch mechanism when the yoke is in another position; substantially as described.

14. In a lock, a latch bolt, retracting hubs therefor, stop work cooperating with one of said hubs, a yoke adapted for actuation by said hubs, and means to do said stop work by means of said yoke; su stantially as described.

15. In a look, a latch bolt, retracting hubs therefor, stop work adapted to dog and release one of said hubs, a yoke adapted for actuation by said hubs, and means acting on said yoke to normally hold the same in dogging position with respect to said stop work when the latter is in operative position; substantially as described.

16. In a lock a latch bolt, retracting mechanism therefor, stop work for control ling said retracting mechanism, including dogging and releasing slides and a walking beam interconnecting said slides, a spring pressed member normally engaging said walking beam to prevent movement of the stop work when the latter is in the operative position, and means for shifting said member to permit the release of the stop work; substantially as described.

In witness whereof, I have hereunto set my hand on the 28th day of February, 1914.

ALBERT A. PAGE.

Witnesses:

MABEL A. Bossn, HELEN F. STAI-INKE.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

